Ophthalmic mounting and method of making the same



E. BELLAIR.

OPHTHALMIC MOUNTING AND METHOD OF MAKING THE SAME. APPLICATION man JULY 28, 1920.

1,374,178. Emmi Apr. 12,1921.

"EDHARD BELLAIR, OF SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR TO D'UPA'UL, YOUNG OPTICAL (30., OF SOUTHBRIDGE, MASSAGHUSETTSQA CQRPGRATION F .MASSACHUSETTS. y

OPHTHALMIC MO J NTING AND METHOD (3F MAKING THE SA]ll1E.

1 37437 Specification of Letters l atent. Patented Ami. 1L, 1&2}.

Application filed July 28, 1920. Serial No. 399,485.

To all whom'it may concern: rims; Fig. 3 is anenlarged detail View of a Be it known that I, Enwnnn BELLAIR, a portion of the rim shown in Fig. 2; Fig. l citizen of the United States, and a-resident is a view in rear elevation of one of the oi. Southbridge, in the county of Worcester non-metallic rims before it is mounted upon and Commonwealth oi hflassachusetts, have the metal rim; Fig. 5 is sectional view invented a. new and useful ln'iprm'ement in taken upon the line 5- 5 of F l'" S O )hthahnic Mountings and Methods of is a sectional View, illustrating the process h airing the Same, of which the following is of mounting the non-metallic rim upon the a specification. i

The present invention relates to ophthaltaken upon the line 7-7 of Fig. el; Fig. 8 mic mountings, particularly mountings 0011;, illustrates a step in the manufacture of the 'stituted of a non-metallic rim combined metallic rim; Fig. S) is an inner view of ophthalmic mountings the inner lens-receivwith a. metal rim, and to methods of mak-- one of the ends of the non-metallic, rim; ing the same. Fig. 10 is a sectional view takenxupon the Though by no means restricted thereto, line 10-40 of Fig. 1; and Fig. 11 is a detail the invention is particularly applicable to view illustrating another step in the process of manufacturing the mounting. y

The invention is illustrated in its pre' 111g 'uns of which are of metal. It has. here; 'are been proposed to unit the rims terred term as embodied in a spectacle of one a mounting by pressmg the ,nonname or mounting comprising two elements metallic "material into contact with the only, one a'split inner metal rim 2 and the metal. These proposals, however, have ,(lther a sphtouter rim elconstituted of nonbeen commercially impractical because remetallic,iplastlov material, like xylonite, celquiring the employment of specially shaped l uloid or other composition. The inner rim metal rims. It has hitherto been considered is of stzmdard shape, its exterior surface be -,impossible to hold together a standard metal" ihg substantially circular in cross-section, as

lens-receiving rim and a non-metallic r1111 .l-rown more particularly at 5 in Fig. 5,"and save by the use of externally applied mechis provided with. an inner lens-receiving aniems' like pins, screws, clips and the like. groove 6. The innerim is manufactured Tl'iis invention has -for its chief object to .f-rom alcyliiulrical-rod'and the groove 6 is provide a new and "improved ophthalmic formed therein by running the rod through mounting comprising: a standard metal rim the/tween roller dies 8 and 10, the active face to which a noirmetallic rim is secured by 01" the die 8 of which is semi-circular in.

pressure alone, and a novel method of makcross-section, as shown at 12, and the active ing such a mounting.

To this end, a feature 01' the. invention gularyas shown at 14. As the diameter of resides in corrugatinnf or otherwise suitably the semi-circular face 12 is little larger.

roughening' the sides of a standard metal than that of the rod, the rod becomes somerim where separation from the non-metallic what flattened, as shown, by the action of rim would otherwise be likely to takeplace, the dies 8" and 10. The face 14 of the die and firmly pressing a non-metallic rinr 10 swage's the metal inwardly to form the against and around the metal rim so as to groove '6, in mentally causing the faces 16 inclose the latter. causing the roughened and 18 of the groove to become rounded at surface to bite into the adjacent non-metaltheir junction with thee'xterior-surface 5,

as shown at 20 and 22.

metallic rim; Fig. 7 is a sectional view,

he surface and securely locking the rims together.

Other and further objects of the invention will he made clear from the following 'The non-metallic rim 4- is also stander-d, being formed by longitudinally grooving at 24 a. cylindrical red at the substance, and

description taken in connection with the then bending it into substantially circular accompanying drawings, in which Figure l. shape, as illustrated in Fig. 4, with the anis a view in front elevation of a pair of nular groove or slot innermost. The rimj) spectacles embodying the present invention, is mounted Within the groove :24 of the riin the temples being removed for clearnees; 4-, after whichthe combined frame is placed Fig. 2 is a similar view of one ofthe metal between dies 26, 28 and 30 at a time when face of the die 10 of which is sharply an were originally of smaller dimension.

the dies are separated The die 26 is provided with an active face 32' that is substantially semi circular in cross-section and the dies 28and 30 are provided with active faces 34 and 36 the cross-sectional outlines-ofv which are substantially quarter c rcles cause the interior crosssectional periphery of the non-metallic rim 4 is greater than the corresponding exterior periphery of the metal ,rim 2', as isshown in F ig; 6. The

nonmetallic material may be set in the new position in any well-known manner, as

by continued pressure and the application of heat. The edges 38 and 40 of the Wings 42 and 44 may then be. trimmed, as by means of the rotary. cutter 45, illustrated in Fig. 11, to provide a free, unobstructed passage for the lens 46 to the groove 6. By providing large enough wings so that their-edges v may be compressed'heyond the boundaries of the groove 6 and then trimmed, a more secure union is obtained than if the wings The above-described process results in shaping the slot 24 substantially circular in cross section, so as to cause it to conform to the surface 5 of the rim 2, with themouth of the slot contracted to inclose the rim'2 within theslot'. As the lensr ec eiving groove 6 is narrower than the diameter' of the metal rim 2, and as the trimmed edges 38 and lOare bent over and -pressedagainst thejrounded surfaces 20 i of the rim 4, the rimsare enabled to slip, '50

and 22 which merge with the faces of the groove 1 6; the metal rim is (well inclosed by the non-metallic rim. This is'nevertheless insuflicient ofitself to. cause the rims to unite firmly together. Owing to the rounded surface 5 of the standard rim 2 and thecorresponding engaging rounded surface 24 one over the other and ultimately to become detached at their free ends 50 and 52.

l To prevent the separation of the rims, the

use of clips, pins, screws and other external securing means has heretofore been re garded as essential. t I

According to the present invention, the

i use of such additional securing elements is rendered entirely unnecessary. Instead, the

. surface 5 of the rim 2 is corrugated or otherwiseroughened-so that when the dies 26, 28 and 30 compress the rims together.

. thecorrugations or other projections formed by the roughening process bite into the surface of'the adjacentnon-mctallic material .and the latter'fiows into the interstices between the corrugations or other projec tions, so that after the non-metallic mate- -rial has becomeset, the two rims are very .firmly locked together, more firmly, even,

than would be the case ifscrews, clips or the like were employed.

- In practice, it is unnecessary to roughen or 'corrugate the whole surface 5. Roughening the. opposite sides 54 and 56 alone of this surface, for example, will fully answer extend far away from the rounded sur 20 and 22. .A large intermediate position :58 of the surface 5 is therefore-shown, smooth. It is necessary to roughen those portions only of the metal rim, furthermore. at which the non-m'etallic rim is most likely to become detached therefrom, as at the free ends 50 and 52. The corrugations- 60 are accordingly shown asformed upon those portions only oi the metal rim which are near the temple end pieces 62. In an .75 'thefpurpose, and the roughening need not aces eyeglass structure, for the same reason, their.

metal would be roughened near the junction of the split ends of the rim with the bridge. If the split ends of the rim can be made to hold together, the intermediate portions will hold also. It is found preferable, for con renlencc, to have the corrugations extend radially inward toward the center of the NIH. i

The end pieces 62 are usually secured to the'free ends of the rim 2 by soldering, and lumps of solder are therefore frequently found at the juncture of the end pieces with; the rim. These would interfere with the ends of the non-metallic rim becoming properly pressed. in against the ends of the metal rim, and would result in a tendency for the rimto become separated. The inner face 24 of the non-metallic rim 4 ,is accordingly gouged out at the ends, as shown at 64, Fig. 9. the better to house accidental lumps"of solder and'to eliminate-the possibility of such lumps causing an insecure union of the rims at the ends. The non-' metallic rims l are provided with notches 66 within which the ends of the bridge 68 are adapted to he received,

According to the present invention, there? fore, a very efficient mounting ofthe above: described character may be readily {and cheaply produced of a minimum number of standard elements. It will be obvious that modifications may be made by persons skilled in the art withoutdeparting from I the spirit and scope as definied' i n the ap pended claims.

What is claimed as new istf 1. Anophthalmic mounting constituted of two elements only, once rim of sub stantially circular cross-section, and the other a rim having an annular slot substantially circular in cross-section and shaped to conform to the surface of the 45 section having emme engagement with the other rim and, said other rim being constituted of plastic material, and the rims being pressed into engagement to cause the roughened surface to bite into the adjacent plastic surface, there- 1.0 by locking the rims together.

2. An ophthalmic mounting constituted of two elements only, one an inner metal rim of substantially circular cross-section having an inner lens-receiving groove and an exterior roughened surface, the faces of the groove being rounded at their junction with the exterior surface, and the other an. outer non-metallic rim having an inner annular slot within which the metal rim is mounted, the wings of the non-metallic rim being pressed against and around the metal rim to the boundaries of the lens-receiving groove to cause the roughened surface to bite into the adjacent non -metallic surfacc,whereby the metal rim is inclosed'by the nonmetallic rim and the rimsarelocked together.

(-3. An ophthalmiomountiug constituted of two elen'ients only, one an inner metal rim of substantially circular cross-section having an inncr lens-receiving groove and an exterior surface the sides of which are corrugated, and the other an outer. nonmetallic rim having an inner annular slot of substantially circular cross-section and shaped to conform to the exterior surface of the metal rim, the mouth of the slot being contracted to inclose the metal rim within the slot, and the rims being pressed, into firm engagement to cause the corrugations to bite into the'adjacent non-metallic surface, thereby locking the rims together.

at. An ophthalmic mounting" constituted. of two elements only, one a split inner metal rim of substantially circular crossan inner lens-receiving groove of narrower width than thediameter of said UPOS-S8CtlOI1 and having end pieces soldered to the split ends of the rim, the eittcrior surface of the rim being radially cor- :30 Wanted along the sides near the split ends,

and the other a split outer non-metallic rim having an inner annular slot of substantially circular cross-section and shaped to conform to the exterior surface of the metal.

55 rim, the wings of the slot being pressed against and around the metal rim to inclose .the metal rim within the slot, thereby looking the rims together, the edges of the wings being trimmed along the boundaries of the lens-receiving groove, and the ends of the non-metallic rim being intcriorly gouged out to receive pro ecting plBCQ S of solder near the end pieces.

" 5. The method of making ay frame which comprises roughening the exteriorsurface 'of an element, mounting the element within bite into the adjacent plastic surface, therei by locking the elements together and cansing the edges of the wings to project be yond the roughened element, and trimming the projecting edges.

6. The method of making an ophthalmic mounting which comprises corrugatin the sides of the exterior surface of a meta rim that is substantially circular in cross-section and that is provided with an'inner lens-receiving groove of smaller width than the diameter of said cross-section, mounting the rim within the annular slot provided be tween the wings of a nonanetallic rim, the interior cross'sectional periphery of the nonunetallic rim being greater than the corresponding exterior periphery of the metal rim, pressing the wings of the nonmetallic rim firmly against and around the metal rim to inclose the metal rim within the slot and to cause the corrugations of the metal rim to bite into the adjacent nonmetallic surface, thereby locking the rims together and causing the edges of the wings to project beyond the boundaries of the lensrecei'ving groove, and trimming the project ing edges of the wings along said groove boundaries.

'7. An ophthalmic mounting constituted of two elements only, one an inner metal the other an outer non-metall1c rim having an inner annular slot within which the metal rim is mounted, the rims being formed with coaeting means for locking the rims together.

8. A frame constituted of two elements only, one having an exterior surface of substantially circular cross section and having a groove of narrower width than the diameter of the element, ,and the other having an inner annular slot of s 'bstantially circular crosssection, the surface of the slot being in engagement with said exterior surface, one of the elements being roughened along the surface of engagement with the, other element, sitid lastmamed element being'constitutcd of plastic material, and the wings of theslotted element bein pressed againstand around the grooved e ement to the boundaries of the groove, whereby the grooved element is inclosed by the slotted element and. the elements are looked to gether.

.9. An ophthalmic mounting constituted of two elements only, One an inner metal l imthe exterior surface of which is substantially circular ingress section and having an inner lensmeceiving greeve the sen faces at the junction between the exterier surface and the faces ef the groove being rounded, and the other an euiser nominate lie rim having an. inner annular slot shag'ed 10 substantlally elrculer 1n cress seamen 5&0

. v I Lemme conform to the said exterior surface and Within "which the metal rim is mounted, the Wings 0% the non-metallic rim. being pressed egainsband around the exterior surfaceand ishe said roupded surfaces of the metal rim 15 50 #Jhe beundames of the groove.

111 eestlmeny wnereoj: '1 have hereunto subscribed my name this 24th day of July, 1920. i u

EFJ WARD EELLAIR; 

